Telephone handset housing panel



FIG. 1 is a top, front, and left side perspective view of a telephone handset housing panel showing our new design;

FIG. 2 is a right side elevation view;

FIG. 3 is a rear elevation view thereof; and,

FIG. 4 is a left side cross-section view thereof.

The broken line showing in FIGS. 1-3 are for illustrative purposes only and for no part of the claimed design. 

The ornamental design for a telephone handset housing panel, as shown and described. 